*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color:#f3f5f7;
}
/* 版心 */
.wrapper {
    width: 1200px;
    margin:0 auto;
}
.header {
    height: 42px;
    background-color: pink;
    margin-top: 30px;
    margin-bottom: 30px;
}
/* 导航区 */
h1 {
    float: left;
}
.nav {
    float: left;
    height: 42px;
    /* background-color: aqua; */
    margin-left: 70px;
}
.nav li {
    float: left;
    margin-right: 26px;
    list-style: none;
    text-decoration: none;
}
.nav li a {
    text-decoration: none;
    display: block;
    padding: 0 9px;
    height: 42px;
    line-height: 42px;
    font-size: 18px;
    color: black;
}
.nav li a:hover{
    border-bottom: 2px solid #00a4ff;
}
/* 搜索区 */
.search {
    float: left;
    width: 412px;
    height: 40px;
    margin-left: 59;
    border: 1px solid #00a4ff;
}
.search input {
    width: 362px;
    height: 40px;
    border: 0;
}
.search input::placeholder{
    font-size: 14px;
    color: #bfbfbf;
}
